Which conductor has highest resistance?

The correct answer is option 1 i.e Mercury. The resistivity of a material is the resistance of a wire of that material of unit length and unit cross-sectional area.

What is a high resistance conductor?

High electrical resistance is the opposition to current flow within a circuit. A high electrical resistance of an electrical conductor is the opposition to the flow of an electric current through that conductor; the inverse measure is known as electrical conductance.

What has very high resistance?

Examples: silver, copper, gold and aluminum. Insulators: Materials that present high resistance and restrict the flow of electrons. Examples: Rubber, paper, glass, wood and plastic.

Does tungsten have high resistance?

Pure tungsten is used in bulbs. Light is radiated from the bulb-filaments as a drop in electrical energy of the circuit. Now as the filament heats up a lot, it shouldn’t melt. Tungsten has a high melting point and high resistivity.

Which is the highest resistivity?

Nichrome has the highest resistivity and shows the heating effect of electric current because of its high resistance, it opposes the flow of current and hence, it produces a lot of heat.

Which has high resistance voltmeter or ammeter?

Thus, out of galvanometer, voltmeter and ammeter, resistance of ammeter is lowest and resistance of voltmeter is highest. If the ammeter is connected in series, whole current flowing in the circuit flows through the ammeter with a very low resistance.

Does poor conductors have high resistance?

Explanation: As mentioned metals have low resistance; insulators have high resistance. Metals like nichrome(nickel + chromium) and mercury are much poorer conductors. In general thicker wires offer less resistance.

Does ammeter have high resistance?

Answer and Explanation: 1 ) Resistance of an ammeter is low. As ammeter is connected in series in the circuit, effective resistance is the sum of resistance of the circuit…

Does Nichrome have high resistance?

Nichrome, a non-magnetic alloy of nickel and chromium has a high resistivity and resistance to oxidation at a high temperature. It is the most commonly used resistance wire for heating purposes.

Which metal has highest melting?

Tungsten
Tungsten has the highest melting point of all metals, at 3,410 °C (6,170 °F).

Which is the high resistance metal?

The most extensively used high working temperature resistance materials are alloys of nickel, chromium and iron called Nichrome and alloys of aluminium, iron and chromium. The presence of chromium ensures a high melting point of oxide coating. The resistivity of Nichrome varies from 1.1 to 1.27 ohm per m and mm2.

Which metal has a high resistance?

Types